Hi, Gramigno from Milan

i can provide lighter to,
untill 1.6kg but i'm afraid that will be very fragile.

if someone is interested to light version let me know,
but i have to say i don't know if a light version will survive to international shipping.

Zitat

Original von Freestyler
Hi,

yesterday i did the first testdrive with the puffo installed.
maddy and my first impressions:

- easy installation
- nice look
and
- perfect sound, not to loud, but louder than the OEM-Box

for some performance-checks i need better weather

result till now:
really good job gramigno

greetings
André

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Thanks mate,
i'll wait your performance test.

Any news from my german team?

I wish to read if you like it or maybe i have to change something.

nobody has driven it yet?

Thanks.

Zitat

Original von deibit
Gramigno.. I understood from s2ki that you did some fluid dynamics studies of your design.

Do you have some comparisons of pressure/speed (volume?) of your design vs the OEM box?

I do but i' m not allowed to provide them.
i' m so sorry,
product is available, but unfortunately studies are not,
because of respect for all the people involved who pay the bills with automotive evolution.

I apologize about that.

Zitat

Original von patrick_S
excuse me, i don't want to critizize your work, but why should a study about an custom intake for one special car kept secret?
Furthermore the production of the S2000 has stopped in 2010
so what has this study to do with automotive evolution?

this here sounds like the story of the great comparison of several intakes (with 100 km/h - Fan) postet on s2ki.
it was made to prove that the PWJDM-Intake make 15+ hp with the "ram-air" effect
as the test was done, PWJDM said that the weather conditions were such as strange that the results cannot be interpretet
no results where posted..
why?
probably because the the comparison doesn't bring the results they wanted?

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I don't get it,
maybe because of my low english skill but i must have misunderstood the question because i don't think i was asked to do the same thing,

in the case of PWD they didn't prove,
i did as you can read from the prints in first page,
(i posted more test results than everyone!)

The question i'm not going to answer is about "how did i do",
because i didn't made it by my self and as i told i' m not allowed to share the studies,
and thath is not on the table,

I'm not asking anybody to trust or belive me,
feel free to don't, even reading the dynos posted in first page,

The question now is:
why should i share the studies?

Because i'm an italian my first answer will be:
to save 300 working hours and do themself their own intake.

and trust me about it,
i'm not going to make it easy.

I REALLY apologize!!
i was 100% sure to have posted this page!

so sorry.

Here you are my prints and comparison;
Just the studies have to be private, not the test.

http://img821.imageshack.us/img821/7500/baru1.jpg

http://img574.imageshack.us/img574/4092/baru2.jpg

http://img31.imageshack.us/img31/9264/baru3.jpg

http://img830.imageshack.us/img830/4043/baru4.jpg

http://img208.imageshack.us/img208/9963/baru5.jpg

http://img121.imageshack.us/img121/5382/baru6.jpg

http://img571.imageshack.us/img571/5343/baru7.jpg

http://img210.imageshack.us/img210/5683/baru8.jpg

http://img697.imageshack.us/img697/4866/blucivic.jpg

http://img121.imageshack.us/img121/4152/c1p8.jpg

http://img441.imageshack.us/img441/3720/rufok.jpg

http://img843.imageshack.us/img843/6435/andreapowerfolle.jpg

http://img577.imageshack.us/img577/986/andy1folle.jpg

http://img442.imageshack.us/img442/9173/andy2folle.jpg

http://img155.imageshack.us/img155/4338/andycpt1folle.jpg

http://img844.imageshack.us/img844/6645/andycpt2frizione.jpg

http://img138.imageshack.us/img138/3882/cda1folle.jpg

http://img34.imageshack.us/img34/9211/cda2folle.jpg

http://img443.imageshack.us/img443/1379/mugen1folle.jpg

http://img804.imageshack.us/img804/3505/mugen2frizione.jpg

http://img101.imageshack.us/im…208/mugenscatolafolle.jpg

According with tje "Plate number":

Gramigno :
test of several intakes fitted on the same car (stock 2004 with 40.000 and just custom friction eliminator.

al the other car are:
resident intake vs Puffo.
on the prints you will find a descrition about cars setup.

Zitat

Original von walter_s
Gramigno Patrick is our "RAM-Air will never work in any car with no intake at any time in any place all over the world" guy....

patrick Nice try

Thank you!
now i start understanding.

I use to have the same doubt before we stated testing.

Maybe i' m just too stupid but i still don't get the point.

One day in August in italian S2K forum we were complaining about the costs related to improve the S2k power output,
because we calculated to improve an S2k in Italy used to cost at least 50 euros/hp for the first 5 ,
at least 100 euro/hp from 6 to 10 hp and untill 150 euro/hp past 15 improving hp.
so we decided to try something new.

i' m not talking about RAM effect, just about Bernoulli's equations and Reynolds's rules,
because if you can provide more air the car will go better,
as we tested with GPS on track and motorways, OBD testing and in the end on a real dyno with 100km/h air fan,
In truth i don' t really understand what's not clear in the prints,
but maybe it's just because i was there.

i apologize about the fact that in the first dyno day i was just testing in a private session the improvements and i forgot to print all the lines,
because using same car in same conditions the green line "dissipata" who means "lost power" was pretty much the same in every case,
and as everyone knows a dyno calculates the "engine power" adding wheel power and lost power,
but for example in "Baru's tests" you will have a single line every paper and you will be free to compare.

I' m not here to cheat to anybody,
even if i hope to have as soon as possible the first german dyno,
nad i hope they will confirm like every other done untill today, it should works in Germany too.

i was just trying to share my stupid invention,
becaue to improve the car in a sensitive way without paying enormous money is now possible,

I don't know how it works in Germany,
here in Italy to have this kind of improvement you have to spend more than 1.000 euro,
i just want to let the world know that having the same results for 1/4 of the requested expense by famous brands sets people free to choose:

i mean,
if you don' t want to spend that money for a branded dynamic intake from today you don't have anymore to.
That's it.

Zitat

Original von Micha B

+1 !

Gramigno: I understand that the design of your intake will surely lead to an increase of airflow, but to realize a "RAM-Air" effect your intake shouldn't be placed behind the bumper. It has to be placed directly in the airstream. But that's another point.

I guess the increase of horsepower comes from the decrease of under pressure in the intake-system. And since I've been trying several ways to get more air into the engine before, I know that even this is a great effort!

Don't get me wrong, I think your intake is one of the best on the market!

I just can't live with that "RAM-Air" story thing.

patrick: Thanks, you've been faster than me!
Here's the link where you can download the test: Click!
Sorry, it's in german, but the diagramms on page 5 should tell the story

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I really appreciate your point of view,

i heard many people talk about ram air effect,

i just said : "Puffo works, givr it a try and let's talk again about it".

By the way:
dynos were tested wth closed bonnet and 100km/ air fan,
but Davide tested it against his prewious stock intake with just 50km/h air,
and he did 9.5+ hp with Puffo.

ASAP i'll post this print too,
made in another town from another dyno and showing the same results.

Zitat

Original von patrick_S
anyway...i don't understand how you got the two curves in one dyno plot
what about the wheel power?
how much increase was there?

i'm asking because wheel power is the only thing you can really measure on a dyno
all other values are calulated respectively projected

excuse me, but an increase of 9.5 Hp @ 50 km/h seems to be a little much
regarding to the test with superbikes - they got gains of 9 HP but @ 300 km/h with a special for this purpose designed ram air intake

other question:
do you have plots without fan?

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for the first questio,
my personal opinion is Honda didn't design a proper intake because they had to satisfy laws about noise and pollution,
if you open a stock element you will find inside lot of stuff designed to just keep low noise,

i don't think i "improved" my car, i just "restored" the intake in a way it should work.

As i told i'm sorry about the wheel line because i didn't print,
in next dyno day i will do it with old prints too,
just for the records:
my stock print used to have 176.4whp with stock intake,
the other results are printed.

i think too an encrease of 9.5@50km/h just proves stock component is not designed for top performance.

for the other question:
i do but i didn't print them because without fan the gain is just little bit more than ZERO,
178whp and not anymore 190!

Maybe i started in the wrong way here,
i was just saying there is a massive difference between the stock intake and a dynamic one,
i don't think i' m a genius, just i realized Honda didn't did it's best this time.

i'm also designing my own exaust because i calcolated it and this time too,
my results are differents,
so i just thinked if last time i gained 13 more Whp,
maybe this time i will gain 5.